1 Motivation and Goals

2 What we have

3 Procedures network

4 Procedures volume

5 Recursive partitioning

5.1 Recursive partition performance

Confusion Matrix and Statistics

Reference
Prediction No Return Returned
No Return 13913 5509
Returned 8916 10760
Metrics
Accuracy 0.6311
95% CI (0.6263, 0.6358)

6 Random Forests

6.1 Performance

Confusion Matrix and Statistics

Reference
Prediction No Return Returned
No Return 3499 1416
Returned 2213 2647
Metrics
Accuracy 0.6287
95% CI (0.6191, 0.6383)

7 Disease-length of stay relationships

8 End

Thanks!